const createError = require('http-errors');
const express = require('express');
const fs = require('fs');
const path = require('path');
const cookieParser = require('cookie-parser');
const logger = require('morgan');
const session = require('express-session');
const RedisStore = require('connect-redis')(session);

const userRouter = require('./routes/user');
const blogRouter = require('./routes/blog');
const commentRouter = require('./routes/comments');
const timelineRouter = require('./routes/timeline');

var app = express();

// view engine setup
// app.set('views', path.join(__dirname, 'views'));
// app.set('view engine', 'jade');

const ENV = process.env.NODE_ENV
if (ENV !== 'production') {
  app.use(logger('dev'));
} else {
  const logFileName = path.join(__dirname, 'logs', 'access.log');
  const writeStream = fs.createWriteStream(logFileName, {
    flags: 'a'
  });

  app.use(logger('combined', {
    stream: writeStream
  }))
}

app.use(logger('combined', {
  stream: process.stdout // 标准输出，默认参数
}));
app.use(express.json());
app.use(express.urlencoded({ extended: false }));
app.use(cookieParser());
// app.use(express.static(path.join(__dirname, 'public')));

const redisClient = require('./db/redis');
const sessionStore = new RedisStore({
  client: redisClient
});
app.use(session({
  // 密匙
  secret: 'Wjiol#23123',
  cookie: {
    path: '/', // default
    httpOnly: true, // default
    maxAge: 24 * 60 * 60 * 1000
  },
  store: sessionStore,
  resave: false,
  saveUninitialized: true
}));
app.all('*', function(req, res, next){
  res.header("Access-Control-Allow-Origin", '*');
  // res.header('Content-Type', 'application/json');
  // // res.header('X-Content-Type-Options', 'nosniff');
  res.header("Access-Control-Allow-Methods", "GET, POST, OPTIONS");
  res.header("Access-Control-Allow-Credentials", "true");


  next()
});

// app.use('/users', usersRouter);
app.use('/api/blog', blogRouter);
app.use('/api/user', userRouter);
app.use('/api/comment', commentRouter);
app.use('/api/timeline', timelineRouter);
app.use('/static', express.static('public/images'));
// catch 404 and forward to error handler
app.use(function(req, res, next) {
  next(createError(404));
});

// error handler
app.use(function(err, req, res, next)
{
  // set locals, only providing error in development
  res.locals.message = err.message;
  res.locals.error = req.app.get('env') === 'development' ? err : {};

  // render the error page
  res.status(err.status || 500);
  res.render('error');
});

module.exports = app;
